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Table - Population by Potential Crop Yields
In other words: these model results overestimate the potential crop yields in China - however, not very much. These yield estimates essentially indicate, how ... by various agro-climatic parameters, such as the temperature profile). The model "accepts" the crop, which produced the highest output under the given agro-climatic profile. For details ...
www.iiasa.ac.at

Chart - Crop Yields by Fertilizer Application
However, this bivariant correlation probably somewhat overestimates the relationship, because it does not take into account the important effects of other cofactors of crop yield ... the increase of chemical fertilizer consumption - is a major factor in China's increase in crop productivity. The data for the plot were taken from the following source: Wang, Q. / ...
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Global Climate Change
Therefore, choosing the right variety can be the most important part of increasing crop yield, according to The University of Georgia's Intensive Wheat Management Site. Even with the ... them from diseases, insects, weeds, and severe weather. Other important factors that affect the yield of wheat crops include temperature, the amount of water available, and even the concentration ...
www.cotf.edu

Equity Watch - Global Environmental Government Unit - Centre for Science and Environment (CSE)
Protocol. Improved water management, higher yielding crop varieties and pest management are ways to increase crop yield. Increased yield causes more carbon to be absorbed by crops, which in turn ... soils. Conservation tillage, where land is tilled in a way that leaves a lot of crop residue on the surface and thus reduces soil erosion by water, and other soil erosion ...
www.cseindia.org

Eco-Economy Indicators: GRAIN HARVEST - Earth Policy Institute Resources on Food and Agriculture
As a result of these shortfalls, world carryover stocks at the end of this crop year are projected to drop to 57 days of consumption, the shortest buffer since the ... Bubble Economy Chapter 4 - Rising Temperatures and Rising Seas Rising Temperature and its Effects The Crop Yield Effect Reservoirs in the Sky Chapter 5 - Natural Systems Under Stress Losing Soil Deteriorating Rangelands ...
www.earth-policy.org

Science and the Environment Bulletin: Water Collection
Canadian Prairies every year. Their positive effects on crop yield are well-documented, but much less is known about how they migrate from their intended ...
www.ec.gc.ca

Nitrous oxide sources - Agricultural Soils
Potential for control The better targeting of ... which accurately take account of the optimum amounts of fertilizer addition necessary for maximum crop yield and minimum waste are crucial both environmentally and economically. Similarly, the exact form ...
www.ghgonline.org

The Regional Impacts of Climate Change
Although climate change impacts could result in significant changes in crop yields, production, storage, and distribution ... of the region. Adaptive options include new temperature- and pest-resistant crop varieties; new technologies to reduce crop yield loss; improvements in irrigation efficiency; and integrated approaches to ...
www.grida.no

WATER CONSERVATION TECHNIQUES ON SMALL PLOTS IN SEMI-ARID AREAS TO ENHANCE RAINFALL USE EFFICIENCY, FOOD SECURITY, AND SUSTAINABLE CROP PRODUCTION
This is only one of the factors which causes measured yield differences between ... stress model termed "Crop Yield Prediction for Semi-Arid Areas" (CYP-SA) was developed to enable long-term yield predictions to be made. The composition of the model for each crop is described in ...
fwr.org

Plan B: Rescuing a Planet Under Stress and a Civilization in Trouble, Chapter 8: Raising Land Productivity--Introduction world population global economy bubble economy sustainable yield sustainable development carbon dioxide climate change global average
Bowl national security aquifer depletion water scarcity China fertilizer use world grain yield biotechnology high-yield varieties multiple cropping protein efficiency oceanic fish catch minimum till INTRODUCTION Chapter ... productivity from USDA, op. cit. note 1. 5. Thomas R. Sinclair, "Limits to Crop Yield," paper presented at the 1999 National Academy Colloquium, Plants and Populations: Is There ...
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